This invention relates to a grid drive of a LCD device and its drive method, in which, the grid drive includes: multiple connected first circuit units outputting a first drive signal to odd numbers of grid lines, multiple connected second circuit units outputting second drive signals to even numbers of grid lines, each of the first circuit units includes: a first signal output unit receiving a first start signal and a first input signal to generate a first drive signal, a first shift buffer storage unit receiving the first start signal and a first time sequence signal to generate a first start signal of the next stage and transmit it to the first circuit unit of the next stage, each of the second circuits includes: a second signal output unit receiving the second start signal and the second input signal to generate a second drive signal, and a second shift buffer storage unit receiving the second start signal and the second time sequence signal to generate the second start signal of the next stage to transmit it to the second circuit unit of the next stage. |